CDI Torque 401SM Micro Adjustable Torque Screwdriver, Torque Range 5 to 40-Inch Pounds, 1/4-Inch

Name: CDI Torque 401SM Micro Adjustable Torque Screwdriver, Torque Range 5 to 40-Inch Pounds, 1/4-Inch
Price: 156.31 USD

grantj · Oct 31, 2011

Oldgringo said:
A torque wrench and a torque driver are two different hand tools. Don't you mean torque driver?

If you really want to be the guy that splits hairs just to rough peoples goat try to be better at it. Were you really confused?

Torque Wrenches:

http://www.amazon.com/Weaver-849728...57PE/ref=sr_1_4?ie=UTF8&qid=1320043098&sr=8-4

http://www.amazon.com/Wheeler-Firea...XR4S/ref=sr_1_1?ie=UTF8&qid=1320043180&sr=8-1

Torque Drivers:

http://www.amazon.com/Lindstrom-MAL...YK/ref=sr_1_20?ie=UTF8&qid=1320043314&sr=8-20

????

Torque Screwdrivers:

http://www.amazon.com/Utica-Hex-Dr-...3BSQ/ref=sr_1_3?ie=UTF8&qid=1320043413&sr=8-3

http://www.amazon.com/Wiha-28506-To...0FCY/ref=sr_1_1?ie=UTF8&qid=1320043443&sr=8-1

http://www.amazon.com/Snap--Industr...VJIO/ref=sr_1_4?ie=UTF8&qid=1320043481&sr=8-4

Impureclient · Aug 29, 2013

I'm ready to bite the bullet and try this torque thing out on the screws now.

http://www.amazon.com/gp/product/B001F7VJIO/ref=pe_62810_32180890_email_1p_0_ti

This one above has what seems like a great range for firearm apllication. I had planned on getting one for bicycle use also and it fits in the range for anything less than what I'd use my big 1/4" and 1/2" torque wrenches for.
Is there any reason to go with a torque wrench over a torque screwdriver? I figured the lower 5 in lbs really covers most anything while the higher 40 is much more than I'll ever use on a gun.
Isn't 25 in lbs the most we are looking at using on a gun? Is there something else out there that is more narrowed down like 5-30 or does that not matter. The way I was thinking is that the more range it
had meant the less accurate it would be when you are trying to go in 1 in lb increments. This blue one here looks like the handle spins like a micrometer with more precise measures going around the handle to get a better measurement.
When you are going in those 1 in lb increments, how hard is it with the way the reading is on the sides of these tools really?

This one while designated for gunsmithing looks kind of cheap and in my head equals less accurate. Is this all that is really needed at a third the cost of the above one?
http://www.amazon.com/Weaver-849728...1377748146&sr=1-2&keywords=Torque+Screwdriver

dwsschatte · Jan 4, 2014

turkish said:
What is the advantage of that wrench over the Wheeler? And how reliable is a torque measurement from such an angle? Probably measures a tad high?

Not sure about the one posted above, but I use a CDI torque driver which is very sleek and similar to the other. It is adjustable from 5 to 60 in 1 inch/lb increments.

http://www.amazon.com/Torque-401SM-Adjustable-Screwdriver-40-Inch/dp/B001F7VJIO

The "fat" wrench is aptly named and is marked with 5 lb adjustments which is fine for the most part, not so good if you want to tweak performance by experimenting with action screw torque.

Ceapea · Dec 11, 2017

I have this one...a CDI.
I like it a lot. I also return it to lowest setting, as they recommend in the manual.

https://www.amazon.com/CDI-401SM-Ad...=8-3-fkmr0&keywords=cdi+torque+wrench+5+to+40

Wiley Coyote · Nov 3, 2018

A GOOD Torque Wrench ( https://www.amazon.com/CDI-401SM-Adjustable-Screwdriver-40-Inch/dp/B001F7VJIO/ref=sr_1_1/132-6575764-5089943?ie=UTF8&qid=1541260570&sr=8-1&keywords=cdi+401sm ) is a great one. Oh, and a little Blue Loctite solves a multitude of problems too.

Smoothtrigger · Feb 21, 2020

This is my choice, along with dozens of fellow RFC members.

CDI 401SM 5-40 inch pounds with a super easy to read rough gauge with precision clicks on the handle.

Here's couple of places to purchase it.to purchase it.
https://www.toolsdelivered.com/CDI-...justable-Torque-Screwdrivers-Micro-Adjustable Great description.
https://www.amazon.com/CDI-401SM-Ad...targid=aud-801381245258:pla-436999456937&psc= Best price.

Smooth

You'd probably get more suggestions if your topic mentioned Torques Screwdrivers.

Ceapea · Aug 11, 2021

Smoothtrigger said:
CDI 401SM 5 to 40 inch pound with .5 inch pound adjustments.
Extremely easy to read adjustments.
Super accurate.
All metal construction with a triangle shape for best grip.
Made in the USA.

I could go on on on, but many RFC members have picked one up on my recommendation with Zero regrets.

Here it is with my 65 inch pound T-handle for 1/2 nut Tactical rings.

Runs about a $140.00
Remember that many low cost torque producst fail over time and will cost you more in the end.

Smooth

I've got the same CDI 401. Had it for years and I wouldn't want anything else. I've used many of the others mentioned here, several of my friends have them. I like the CDI model!!

https://www.amazon.com/CDI-401SM-Ad..._r=0J1XQRA5200Z5Q8EWP4T&qid=1628653343&sr=8-5

ntsqd · 2022-05-29T10:41:20-0400

I have not been all that impressed with any of the Wheeler tools including the FAT wrench. I have one - came in a scope ring lapping kit, I don't use it.

If you insist on using a clicker then buy a brand name torque wrench. This would be one example: https://www.amazon.com/CDI-401SM-Adjustable-Screwdriver-40-Inch/dp/B001F7VJIO
I haven't been a fan of clickers since one of them cost us a bunch of bearings, one billet stroker crankshaft, and some lost races. The lesson that I learned there is that clickers can go out of calibration and unless you regularly send them out for calibration you won't know that they have. This can happen even if you are backing them all of the way off after every use.

I use one of these: https://www.amazon.com/Neiko-03727A-4-Inch-Torque-Wrench/dp/B01FMXEWQC When it is out of calibration it indicates that it is and I bend the pointer back to zero.

Smoothtrigger · 2022-05-30T10:36:05-0400

yrunvs said:
Looks like a nice one.

Amazon.com

Why would you want a tongue wrench that goes from 15 to 80 inch ounces?
Thats just under 1 pound to a max of 5 inch pounds!

I recommend taking a look at my favorite and many other RFC members, the CDI 401SM 5-40 inch pound screw driver that has .5lb clicks (1inch pound would have been just fine).

CDI Torque 401SM Micro Adjustable Torque Screwdriver, Torque Range 5 to 40-Inch Pounds, 1/4-Inch - - Amazon.com

www.amazon.com

Here's mine.

Smooth

yrunvs · 2022-05-30T10:50:57-0400

Smoothtrigger said:
Why would you want a tongue wrench that goes from 15 to 80 inch ounces?
Thats just under 1 pound to a max of 5 inch pounds!

I recommend taking a look at my favorite and many other RFC members, the CDI 401SM 5-40 inch pound screw driver that has .5lb clicks (1inch pound would have been just fine).

CDI Torque 401SM Micro Adjustable Torque Screwdriver, Torque Range 5 to 40-Inch Pounds, 1/4-Inch - - Amazon.com

CDI Torque 401SM Micro Adjustable Torque Screwdriver, Torque Range 5 to 40-Inch Pounds, 1/4-Inch - - Amazon.com

www.amazon.com

Here's mine.

Smooth

I ended up getting this one. But to be honest I did not notice the inch ounce on the one you linked.

VEVOR Optics Torque Wrench Mounting Kit Handheld Torque Limiting Screwdriver 10-50 in-lbs-1in-lbs - - Amazon.com

www.amazon.com

CDI Torque 401SM Micro Adjustable Torque Screwdriver, Torque Range 5 to 40-Inch Pounds, 1/4-Inch

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